Bypass cache when displaying settings on "settings" page (#4499)

* Bypass cache when displaying settings on "settings" page

- Sometimes caching issues can cause "old" values to be stored (depends on the worker)
- Until we have a shared cache, this is a problem
- Force the settings to be re-loaded from the database when displaying
- Further improvement would be to render them via the API

* Bypass cache for report and label printing

* Update test

(cherry picked from commit 18c7c1d756)

InvenTree/report/tests.py

@@ -375,7 +375,7 @@ class BuildReportTest(ReportTest):
         self.assertEqual(headers['Content-Disposition'], 'attachment; filename="report.pdf"')
 
         # Now, set the download type to be "inline"
-        inline = InvenTreeUserSetting.get_setting_object('REPORT_INLINE', user=self.user)
+        inline = InvenTreeUserSetting.get_setting_object('REPORT_INLINE', cache=False, user=self.user)
         inline.value = True
         inline.save()